BMW 3: Climate Control
BMW 3 Series G20 (2018-2025) Training manual / Climate Control
As in previous BMW hybrid vehicles, an electrically powered air conditioning compressor is used in the G20 PHEV. Because the A/C compressor has an electric motor, it is possible to operate the air conditioning independently of the combustion engine. Thus the customer can enjoy the cooling effect of the air conditioning even while driving in pure electric mode and while stopped.
The high-voltage battery unit is cooled by the vehicle's refrigerant's circuit.
The stationary climate control is also available in the G20 PHEV.
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System overview
G20 PHEV, components of refrigerant circuit
Combined expansion and shutoff valve (interior)
Combined expansion and shutoff valve (high-voltage battery unit)
High-voltage battery unit
Refrig
Electric A/C compressor
Electric A/C compressor (EKK)
Signal connector
Low pressure line (gaseous refrigerant at low temperature and low
pressure)
High-voltage connector
High pressure line (gaseous refrigerant at hig
Stationary cooling
Owing to the fact that the air conditioning compressor in the G20 PHEV is
electrically operated and
that the high-voltage battery unit has high energy and power densities, a
stationary climate
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Functions
The cooling system has 2 operating conditions, which result from its
function:
Cooling OFF
Cooling ON
Cooling OFF operating condition
The "Cooling OFF" operating condition is active when the cell temperature is
in or below an optimal
range. This is generally the case if the vehicle is moved at
Storage compartments
General information
The vehicle interior contains multiple storage
compartments for stowing objects.
Safety information
Warning
Loose objects or devices with a cable connection
to the vehicle, for instance mobile phones,
can be thrown into the car's interior while driving,
for instance in the event
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